Share:
BITZER 2-Stage Semi-Hermetic Reciprocating Compressor
ECOLINE 2-Stage | S4T–S6F Standard Series & S66 Tandem Series
Engineered for demanding low-temperature and ultra-low-temperature refrigeration, combining robust semi-hermetic construction, two-stage compression and a broad range of compressor capacities.
BITZER ECOLINE 2-Stage compressors are designed for refrigeration systems operating at very low evaporating temperatures. Their two-stage compression process divides the overall pressure increase between low-pressure and high-pressure stages, supporting efficient operation across demanding pressure ratios when correctly engineered.
✨ Why Choose BITZER 2-Stage Compressors?
❄️ Ultra-Low Temperature
Designed for deep-freezing and demanding low-temperature refrigeration applications.
⚙️ Two-Stage Compression
Low-pressure and high-pressure compression stages within a purpose-built compressor system.
🔩 Robust Construction
Optimised drive mechanism and durable semi-hermetic reciprocating design.
📈 Long-Term Value
A strong choice for projects prioritising operating efficiency, reliability and lifecycle value rather than initial price alone.
📊 Compressor Range Overview
Standard Models
S4T, S4N, S4G, S6J, S6H, S6G and S6F.
Standard Displacement
m³/h theoretical displacement at 50 Hz.
Tandem Displacement
m³/h at 50 Hz across the listed S66 tandem range.
📋 Available BITZER 2-Stage Compressor Models
Click a category to expand the model table.
01 / Standard 2-Stage Compressors — S4T to S6F
| Model | Displacement at 50 Hz | Configuration |
|---|---|---|
| S4T-5.2(Y) | 19.7 m³/h | Standard |
| S4N-8.2(Y) | 28.0 m³/h | Standard |
| S4G-12.2(Y) | 42.3 m³/h | Standard |
| S6J-16.2(Y) | 63.5 m³/h | Standard |
| S6H-20.2(Y) | 73.6 m³/h | Standard |
| S6G-25.2(Y) | 84.5 m³/h | Standard |
| S6F-30.2(Y) | 101.1 m³/h | Standard |
02 / Tandem 2-Stage Compressors — S66 Series
| Model | Displacement at 50 Hz | Configuration |
|---|---|---|
| S66J-32.2(Y) | 127.0 m³/h | Tandem |
| S66H-40.2(Y) | 147.2 m³/h | Tandem |
| S66G-50.2(Y) | 169.0 m³/h | Tandem |
| S66F-60.2(Y) | 202.2 m³/h | Tandem |
⚙️ Technical Features
Optimised Drive Mechanism
Purpose-designed reciprocating mechanism for reliable low-temperature operation.
Efficient Motor Design
Integrated motor design suitable for the compressor's intended operating range.
Two Compression Stages
Dedicated low-pressure and high-pressure compression stages for demanding refrigeration conditions.
Refrigerant Options
Selected HFC/HCFC and lower-GWP refrigerants, subject to exact model approval and operating limits.
System Integration
Can be engineered with appropriate liquid subcooling, injection control and system protection.
Single & Tandem Designs
Different displacement options allow selection for small and larger refrigeration system requirements.
🏭 Typical Applications
Deep Freezing
Industrial and commercial deep-freezing refrigeration systems.
Ultra-Low Temperature
Specialised refrigeration processes requiring very low evaporating temperatures.
Cold Storage
Low-temperature cold rooms and frozen-goods storage facilities.
Process & Marine Cooling
Selected industrial process and marine refrigeration applications.
📐 Compressor Selection Guide
Please provide these details so our team can assist with the correct model selection:
Looking for a BITZER 2-Stage Compressor?
Contact our team for model selection, technical enquiries, availability and quotation.
Inquiry - Bitzer 2-Stage Semi-Hermetic Compressor
